Electrode feeding device

Abstract

This utility model discloses an electrode feeding device, including multiple electrode placement slots for accommodating electrodes. Each electrode placement slot includes at least a first placement slot and a second placement slot arranged at a preset angle. The first placement slot is used to place stacked electrodes along a first direction, and the second placement slot is used to place stacked electrodes along a second direction. In the intersection area of ​​the first and second placement slots, electrodes placed along the first direction and electrodes placed along the second direction are alternately stacked vertically. The included angle between the first and second directions is the preset angle, and the third direction is the thickness direction of the electrode stack. This utility model reduces the contact area between upper and lower electrode layers, thereby reducing electrode sticking.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an electrode feeding device. Background Technology

[0002] Stacked batteries are widely used in new energy vehicle power batteries, energy storage power stations, and other fields due to their unique structural advantages. Compared with traditional wound batteries, the stacking process significantly improves the utilization rate of the battery's internal space through the stacked electrode design, demonstrating outstanding performance in terms of energy density, cycle life, and safety. Before stacking the electrodes, a clip device can be used to load the electrodes, while simultaneously using high-temperature vacuum baking to remove moisture from the electrodes. However, using a clip device to load the electrodes during baking has the drawback of electrode sticking; that is, when the upper electrode is removed during electrode loading, the lower electrode is carried away due to adhesion. Utility Model Content

[0003] When electrodes are placed in a clip-on baking device, there is a drawback: electrode sticking. Specifically, when the upper electrode is removed during loading, the lower electrode is often pulled up along with it due to adhesion. This not only affects production efficiency but, if not detected in time, the stuck electrodes can be stacked into the bare cell, posing a risk of lithium plating and thermal runaway. To overcome the shortcomings and deficiencies of the existing technology, the purpose of this invention is to provide an electrode loading device that reduces the contact area between the upper and lower electrode layers, thereby reducing electrode sticking.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] An electrode feeding device includes a plurality of electrode placement slots for accommodating electrodes. Each electrode placement slot includes at least a first placement slot and a second placement slot arranged at a preset angle. The first placement slot is used to place stacked electrodes along a first direction, and the second placement slot is used to place stacked electrodes along a second direction. In the intersection area of ​​the first placement slot and the second placement slot, electrodes placed along the first direction and electrodes placed along the second direction are alternately stacked in a third direction. The included angle between the first direction and the second direction is the preset angle, and the third direction is the thickness direction of the electrode stack.

[0006] In one embodiment, the electrode feeding device further includes a plurality of limiting structures, which together form the electrode placement groove.

[0007] In one embodiment, the limiting structure includes multiple supports, which are respectively disposed at the corner positions of each of the electrode placement slots.

[0008] In one embodiment, the bracket is an L-shaped bracket.

[0009] In one embodiment, the limiting structure further includes a plurality of guide posts, which are respectively disposed on the side of each of the electrode placement slots.

[0010] In one embodiment, the limiting structure further includes a plurality of guide posts, which are spaced apart on both sides of the second placement groove along a first direction and spaced apart on both sides of the first placement groove along a second direction, with a gap formed between adjacent guide posts for the electrode to pass through.

[0011] In one embodiment, the electrode feeding device further includes a base plate, one end of the limiting structure is disposed on the base plate, and the other end extends in a third direction.

[0012] In one embodiment, the limiting structure is detachably mounted on the base plate.

[0013] In one embodiment, the preset angle is α, and α is 90°.

[0014] In one embodiment, there are multiple first placement slots, which are arranged in parallel along a first direction; there are multiple second placement slots, which are arranged in parallel along a second direction; the multiple first placement slots and the multiple second placement slots intersect to form a mesh structure.

[0015] The beneficial effects of this utility model are as follows: by setting at least one first placement slot and at least one second placement slot, the two slots are arranged at a preset angle; the first placement slot places stacked electrode sheets along the first direction, and the second placement slot places stacked electrode sheets along the second direction. In the intersection area, the electrode sheets in the first and second directions are alternately stacked in the third direction, which is the thickness direction of the electrode sheet stack. This realizes the alternating stacking of the intersecting electrode sheets in the electrode sheet thickness direction, reducing the contact area between the upper and lower electrode sheets, thereby reducing the electrode sheet sticking phenomenon. It solves the problem that when the upper electrode sheet is removed during the original electrode sheet feeding process, the lower electrode sheet is easy to stick to the upper electrode sheet, which improves production efficiency and reduces the risk of lithium plating and thermal runaway caused by the sticking electrode sheets being stacked together in the bare cell. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view schematic diagram of an electrode feeding device according to an embodiment of the present invention;

[0018] Figure 2 Is Figure 1 Top view of the electrode plate after installation;

[0019] Figure 3 yes Figure 2 A schematic diagram of the three-dimensional structure;

[0020] Figure 4 This is a cross-sectional schematic diagram of the electrode feeding device after the electrode is installed according to an embodiment of this utility model;

[0021] Figure 5 This is a top view of the electrode feeding device after the electrode is installed, according to another embodiment of this utility model;

[0022] Figure 6 This is a top view of the electrode feeding device after the electrode is installed, according to another embodiment of this utility model.

[0023] In the figure: 1. Electrode placement slot; 11. First placement slot; 12. Second placement slot; 2. Limiting structure; 21. Support; 22. Guide post; 23. Gap; 3. Base plate; 4. Electrode. Detailed Implementation

[0024] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0028] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0029] This utility model provides an electrode feeding device, such as... Figures 1 to 4 As shown, it includes multiple electrode placement slots 1, which are used to accommodate electrode sheets 4. Each electrode placement slot 1 includes at least a first placement slot 11 and a second placement slot 12 that are intersected at a preset angle α. The first placement slot 11 is used to place stacked electrode sheets 4 along a first direction X, and the second placement slot 12 is used to place stacked electrode sheets 4 along a second direction Y. In the intersection area of ​​the first placement slot 11 and the second placement slot 12, the electrode sheets 4 placed along the first direction X and the electrode sheets 4 placed along the second direction Y are alternately stacked in a third direction Z. The included angle between the first direction X and the second direction Y is the preset angle α, and the third direction Z is the thickness direction of the stacked electrode sheets 4.

[0030] In this embodiment, at least one first placement slot 11 and at least one second placement slot 12 are provided, and the two slots are arranged to intersect at a preset angle α. The first placement slot 11 places stacked electrode sheets 4 along the first direction X, and the second placement slot 12 places stacked electrode sheets 4 along the second direction Y. In the intersecting area, the electrode sheets 4 in the first direction X and the second direction Y are alternately stacked in the third direction Z, where the third direction Z is the thickness direction of the stacked electrode sheets 4. This achieves the alternating stacking of the intersecting electrode sheets 4 in the thickness direction of the electrode sheets 4, reducing the contact area between the upper and lower electrode sheets 4, thereby reducing the electrode sheet 4 sticking phenomenon. This solves the problem that when the upper electrode sheet 4 is removed during the original electrode sheet 4 feeding process, the lower electrode sheet 4 is easy to stick to the upper electrode sheet 4, improving production efficiency and reducing the risk of lithium plating and thermal runaway caused by the sticking electrode sheets 4 being stacked together in the bare cell. Among them, the first direction X and the second direction Y intersect in the horizontal plane, and the third direction Z is the thickness direction of the stacked electrode sheets 4, that is, the vertical direction. The horizontal intersecting layout optimizes space, and the vertical alternating stacking enhances stability.

[0031] As one implementation method, such as Figures 1 to 4 As shown, the electrode feeding device also includes multiple limiting structures 2, which together form an electrode placement groove 1. In this embodiment, the electrode placement groove 1 is formed by multiple limiting structures 2, which constrain the position of the electrode 4, ensuring the positional accuracy of the electrode 4 within the electrode placement groove 1, preventing the electrode 4 from tipping over or misaligning during stacking, and improving feeding stability.

[0032] As one implementation method, such as Figures 1 to 3 As shown, the limiting structure 2 includes multiple supports 21, which are respectively disposed at the corner positions of each electrode placement slot 1. In this embodiment, multiple independent supports 21 are disposed at the corner positions of each electrode placement slot 1 to limit the corners of the electrode 4, thereby limiting the electrode 4.

[0033] As one implementation method, such as Figures 1 to 3 As shown, bracket 21 is an L-shaped bracket 21. The L-shaped bracket 21 fits into the corner of the electrode 4, providing bidirectional limiting, simplifying the installation process and improving structural stability.

[0034] As one implementation method, such as Figures 1 to 3 As shown, the limiting structure 2 also includes multiple guide posts 22, which are respectively disposed on the side of each electrode placement slot 1 to limit the relative sides of the electrode 4 and improve the accuracy of limiting the position of the electrode 4.

[0035] As one implementation method, such as Figures 1 to 3 As shown, multiple guide posts 22 are spaced apart along the first direction X on both sides of the second placement groove 12, and multiple guide posts 22 are spaced apart along the second direction Y on both sides of the first placement groove 11. A gap 23 is formed between adjacent guide posts 22 for the electrode sheet 4 to pass through. In this embodiment, guide posts 22 are arranged on both sides of the first placement groove 11 and the second placement groove 12, spaced apart along the length of the groove. A gap 23 is formed between any guide post 22 along the first direction X and a guide post 22 adjacent to that guide post 22 along the second direction Y for the electrode sheet 4 to pass through, and a gap 23 is also formed between any guide post 22 along the second direction Y and a guide post 22 adjacent to that guide post 22 along the first direction X for the electrode sheet 4 to pass through. The guide posts 22 guide the electrode sheets 4 to stack along their thickness direction, preventing the electrode sheets 4 from shifting during the stacking process.

[0036] As one implementation method, such as Figures 1 to 4 As shown, the electrode feeding device also includes a base plate 3. One end of the limiting structure 2 is set on the base plate 3, and the other end extends in the third direction Z. Specifically, the limiting structure 2 is installed on the base plate 3, and the base plate 3 serves as a supporting base. The base plate 3 uniformly supports all the limiting structures 2, ensuring that the horizontality of each electrode placement slot 1 is consistent, which facilitates the overall movement or installation of the device.

[0037] As one implementation method, the limiting structure 2 is detachably mounted on the base plate 3. Specifically, the limiting structure 2 and the base plate 3 are detachably connected (e.g., by bolts, clips, etc.), which supports adjustment of the spacing of the limiting structure 2 to accommodate electrode sheets 4 of different sizes (e.g., length or width), thereby improving the versatility of the device and reducing the cost of changing models.

[0038] As one implementation method, such as Figure 2As shown, the preset angle is α, which is 90°; that is, the first placement slot 11 and the second placement slot 12 are orthogonally intersected. The orthogonal layout simplifies the device structure design, maximizes the use of space, and ensures that the alternately stacked electrode sheets 4 are subjected to uniform force. Of course, α can also be set to other angles, such as 30°, 45°, 60°, etc., which will not be listed here.

[0039] As one implementation method, such as Figures 1 to 6 As shown, there are multiple first placement slots 11, which are arranged parallel to each other along the first direction X; there are multiple second placement slots 12, which are arranged parallel to each other along the second direction Y; the multiple first placement slots 11 and the multiple second placement slots 12 intersect to form a mesh structure. Specifically, the multiple first placement slots 11 are arranged parallel to each other along the first direction X, and the multiple second placement slots 12 are arranged parallel to each other along the second direction Y. The multiple first placement slots 11 arranged parallel to each other along the first direction X and the multiple first placement slots 11 arranged parallel to each other along the second direction Y intersect to form a mesh structure. The mesh layout increases the number of stress points between adjacent stacked electrode sheets 4, improves the overall structural stability of the electrode sheets 4 during stacking, and avoids deformation of the electrode sheets 4 during stacking; and can adapt to the mixed stacking requirements of multiple specifications of electrode sheets 4 by adjusting the limiting structure 2 of each electrode placement slot 1; it can be set to two in each direction (e.g., two in each direction). Figure 2 ), three (such as Figure 5 ) or four (such as Figure 6 The parallel electrode placement slots 1 are arranged in a crisscross pattern to meet the different size requirements of the electrode 4. There can be more than one slot, which is not limited here. The number of electrode 4 stacked in each first placement slot 11 is the same, and the number of electrode 4 stacked in each second placement slot 12 is the same.

[0040] As one implementation method, such as Figure 2 and Figure 3 As shown, during the stacking process of the electrode 4, the electrode 4 can be first placed sequentially along the second direction Y into a plurality of first placement slots 11 arranged parallel to the first direction X to form a first electrode layer. Then, the electrode 4 can be placed sequentially along the first direction X into a plurality of second placement slots 12 arranged parallel to the second direction Y to form a second electrode layer. The first electrode layer and the second electrode layer are alternately arranged to maintain balance. Alternatively, the electrode 4 can be first placed sequentially along the first direction X into a plurality of second placement slots 12 arranged parallel to the second direction Y to form a first electrode layer. Then, the electrode 4 can be placed sequentially along the second direction Y into a plurality of first placement slots 11 arranged parallel to the first direction X to form a second electrode layer. The first electrode layer and the second electrode layer are alternately arranged to maintain balance.

[0041] As one implementation, the top of the limiting structure 2 is provided with a guide slope (not shown), which is inclined to the side of the electrode placement groove 1 to guide the electrode 4 to slide smoothly into the electrode placement groove 1, thereby avoiding damage to the electrode 4 caused by edge collision during manual or mechanical feeding.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content without departing from the scope of the technical solution of the present utility model. These are equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pole piece feeding device, characterized in that, The device includes multiple electrode placement slots (1), each used to accommodate electrode sheets (4). Each electrode placement slot (1) includes at least a first placement slot (11) and a second placement slot (12) arranged at a preset angle. The first placement slot (11) is used to place stacked electrode sheets (4) along a first direction (X), and the second placement slot (12) is used to place stacked electrode sheets (4) along a second direction (Y). In the intersection area of ​​the first placement slot (11) and the second placement slot (12), the electrode sheets (4) placed along the first direction (X) and the electrode sheets (4) placed along the second direction (Y) are alternately stacked in a third direction (Z). The included angle between the first direction (X) and the second direction (Y) is the preset angle, and the third direction (Z) is the thickness direction of the stacked electrode sheets (4).

2. The pole piece loading device of claim 1, wherein The electrode feeding device also includes multiple limiting structures (2), which together form the electrode placement groove (1).

3. The electrode feeding device as described in claim 2, characterized in that, The limiting structure (2) includes multiple brackets (21), which are respectively disposed at the corner positions of each electrode placement slot (1).

4. The electrode feeding device as described in claim 3, characterized in that, The bracket (21) is an L-shaped bracket (21).

5. The electrode feeding device as described in claim 2, characterized in that, The limiting structure (2) also includes a plurality of guide posts (22), which are respectively disposed on the side of each electrode placement slot (1).

6. The electrode feeding device as described in claim 2, characterized in that, The limiting structure (2) further includes a plurality of guide posts (22), which are spaced apart along the first direction (X) on both sides of the second placement groove (12) and spaced apart along the second direction (Y) on both sides of the first placement groove (11). A gap (23) is formed between adjacent guide posts (22) for the electrode (4) to pass through.

7. The electrode feeding device as described in claim 2, characterized in that, The electrode feeding device also includes a base plate (3), one end of the limiting structure (2) is disposed on the base plate (3), and the other end extends in the third direction (Z).

8. The electrode feeding device as described in claim 7, characterized in that, The limiting structure (2) is detachably mounted on the base plate (3).

9. The electrode feeding device as described in claim 1, characterized in that, The preset angle is α, and α is 90°.

10. The electrode feeding device according to any one of claims 1-9, characterized in that, There are multiple first placement slots (11), and the multiple first placement slots (11) are arranged in parallel along the first direction (X); there are multiple second placement slots (12), and the multiple second placement slots (12) are arranged in parallel along the second direction (Y); the multiple first placement slots (11) and the multiple second placement slots (12) intersect to form a mesh structure.

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